Tightness. We should keep greenhouses tightness, only tightness reached in order to play the role of insulation, insulation covering material previously used straw thatch, Po seats, etc., although it can play the role of insulation, but the drawback is heavy, volume put a lot of work laborious, after being soaked by rain and snow insulation wholesale, not only increasing the weight, but also make the insulation performance degradation, and pollution of the film, easily reduce the transmission rate. The greenhouse insulation is a lightweight, waterproof, anti-aging, insulation, and other far-infrared reflectance function, long life, good insulation effect, under the same conditions than the grass thatch covering temperature can be increased by 10 degrees for easy storage collection, the product suitable for greenhouse, Greenhouse, eco-restaurant, long-distance trucks, greenhouses and other insulation cover, grass thatch and paper is the best alternative. Needle felt insulation was "needle felt" is broken with the old line (cloth) and other materials must be processed after re-pressed industrial insulation is low cost, good insulation properties. Needle felt insulation was used as the main needle felt cold insulation materials, (you can also use aluminum film on one side and white polyester fabric sewn fabric cooperation), the use of suture material. This insulation was to be heavier than their own weight composite insulation, wind performance and better insulation properties. Its biggest drawback is that the water is poor. But if the show to spend Oxford waterproof cloth insulation was dedicated, it can be made weatherproof insulation, the other, before the insulation is retractable to save, you need a large space to dry, you can save only after dry. Building insulation was, insulation was widely St. agricultural machinery provided by Shouguang Agricultural Machinery Co., St. Canton. Shouguang City, Canton St. Agricultural Machinery Co., Ltd. (www.sdguangsheng.com) strong, credible, Weifang in Shandong agricultural machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the broad St. agricultural machinery and you hand into the brilliant, for a better future!